High-content graphene modified nylon 6 master batch as well as preparation method and application thereof

A graphene modification and high-content technology, which is applied in the manufacture of conductive/antistatic filaments, conjugated synthetic polymer artificial filaments, etc., can solve the problems of graphene dispersion and achieve increased viscosity and high dispersion , the effect of accelerating the dispersion speed

Active Publication Date: 2017-12-12
长沙五犇新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this method, the amount of graphene does not exceed 2%, and the problem of graphene dispersion in nylon is still not solved.

Method used

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  • High-content graphene modified nylon 6 master batch as well as preparation method and application thereof
  • High-content graphene modified nylon 6 master batch as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0047] Table 1 Raw material composition of high-content graphene-modified nylon 6 masterbatches in Examples 1-7

[0048]

[0049] Note: "-" in the table means not added.

[0050] Examples 1-5 of the preparation method of high-content graphene-modified nylon 6 masterbatch

[0051] (1) According to the weight parts of the raw materials in Examples 1 to 5 in Table 1, add graphene oxide and coupling agent to a high-speed stirrer and mix them. At 80°C, with a stirring speed of 60r / min and an ultrasonic frequency of 35Hz, heat and ultrasonically stir for 15min , then add a dispersant, heat and stir at 80°C and a stirring speed of 220r / min for 8min, then add a catalyst, heat and stir at 65°C and a stirring speed of 70r / min for 6min to obtain a graphene slurry;

[0052] (2) Add caprolactam and molecular weight regulator into the polymerization kettle according to the weight parts of each raw material in Example 1 to 5 in Table 1, heat to 80°C until the caprolactam melts, and add t...

Embodiment 7

[0059] (1) According to the weight parts of each raw material in Example 7 of Table 1, add graphene oxide and coupling agent into a high-speed stirrer and mix them. At 80°C, with a stirring speed of 60r / min and an ultrasonic frequency of 30Hz, heat and ultrasonically stir for 15min, and then Add a dispersant, heat and stir at 90°C and a stirring speed of 240r / min for 10min, then add a catalyst, heat and stir at 70°C and a stirring speed of 80r / min for 7min to obtain a graphene slurry;

[0060](2) Add the caprolactam and the molecular weight regulator into the polymerization kettle according to the weight parts of the raw materials in Example 7 of Table 1, heat to 90°C until the caprolactam melts, and add the graphene slurry obtained in step (1) at a stirring speed of 120r / min After the feeding of the graphene slurry is completed, continue to heat up to 270°C, and carry out the ring-opening reaction at a stirring speed of 90r / min for 3.5h, then start vacuuming to a vacuum degree...

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Abstract

The invention provides a high-content graphene modified nylon 6 master batch as well as a preparation method and application thereof. The master batch is prepared from caprolactam, graphene oxide, coupling agents, dispersing agents, catalysts and molecular weight modifiers. The method comprises the following steps of (1) mixing the graphene oxide and the coupling agents; performing heating and ultrasonic agitation; then, adding dispersing agents; performing heat stirring; then, adding catalysts; performing heating stirring to obtain graphene slurry; (2) heating and stirring the caprolactam and the molecular weight modifiers; adding the graphene slurry; performing ring-opening reaction; performing vacuum pumping, polymerization, still standing, temperature reduction nitrogen filling, discharging, cooling pelletizing to obtain a semi-finished product; (3) performing hot water extraction and drying to obtain a finished product. The master batch has the advantages of high intrinsic viscosity and high graphene content; the prepared composite material has high heat conduction coefficient, low surface resistance, high bending intensity and high stretch intensity. The method provided by the invention has the advantages that the process is simple; the cost is low; the mass production can be realized.

Description

technical field [0001] The invention relates to a nylon 6 masterbatch and its preparation method and application, in particular to a high-content graphene-modified nylon 6 masterbatch and its preparation method and application. Background technique [0002] Graphene has a very complete two-dimensional crystal structure, which is composed of six carbon atoms forming a hexagon with a thickness of one atomic layer. Carbon atoms are connected by SP2 hybrid σ bonds, which endow graphene with excellent mechanical properties and structural rigidity; in graphene, each carbon atom has a P electron that is not bonded, and these P electrons can be found in the crystal Free movement, its speed can reach 1 / 300 of the speed of light, this characteristic endows graphene with excellent electrical conductivity; graphene's thermal coefficient is as high as 5300W / m·k, which is an excellent thermal conductivity material. [0003] Graphene-modified nylon can be used to manufacture thermally con...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G69/14C08G69/16C08K9/06C08K9/04C08K3/04C08L77/02C08J3/22D01F8/12D01F1/09
CPCC08G69/14C08G69/16C08J3/226C08J2377/02C08J2477/02C08K3/04C08K9/04C08K9/06C08K2201/001C08L77/02C08L2201/04C08L2203/12C08L2205/025D01F1/09D01F8/12
Inventor 陈如意邓凯桓陈宪宏
Owner 长沙五犇新材料科技有限公司
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